Home / 10,126.18-15,189.72-3,105.68

Finding the Fourth Proportional to 10,126.18, 15,189.72 and 3,105.68

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Solution

The fourth proportional to 10,126.18, 15,189.72 and 3,105.68 is: 4,658.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,126.18 : 15,189.72 = 3,105.68 : x
  2. Step 2: Convert to fraction form
    10,126.18/15,189.72 = 3,105.68/x
  3. Step 3: Cross multiply
    10,126.18x = 15,189.72 × 3,105.68
  4. Step 4: Simplify right side
    10,126.18x = 47,174,390.62
  5. Step 5: Solve for x
    x = 47,174,390.62/10,126.18
  6. Step 6: Final answer
    x = 4,658.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.